Nut-lock



(No Model.)

F. REYNARD.

, NUT LOCK.

No. 453,660. Patented June 9,1891.

i STATES PATENT OFFICE.

FREMONT REYN ARD, OF AMHERST, NEBRASKA.

NUT-LOC K.

SPECIFICATION forming part of Letters Patent No. 453,660, dated June 9, 1891.

Application filed February 19, 1891. Serial No. 382,033. (N o modelJ' To all whom it may concern:

Be it known that I, FREMONT REYNAED, a citizen of the United States, residing at Amherst, in the county of Buffalo and State ot Nebraska, have invented certain new and useful Improvements in Nut-Locks; and I do declare the following to beafull, clear, and exact description of theinvention,such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to an improvement in nut-locks; and it consists in the construction and arrangement of parts fully hereinafter described, and definitely pointed out in the claim.

The object of myinvention is to provide and construct a lock for nuts which may be readily applied, quickly adj usted, and cheaply manufactured. I obtain this object by the construction illustrated in the accompanying drawings, wherein like letters of reference indicate like parts in the several views, and in which- Y Figure l is an elevation of a bolt, with my locking device, together with the nuts, shown in vertical section. Fig. 2 is a similar View of a modified form. Fig. 3 is adetail perspective View of a cap. p

A represents a bolt having its shank at the outer end reduced, as at B, which portion has a lefthand screw-thread formed thereon. By this reduction a shoulder 'a is formed on the bolt, the end ot the bolt back from the shoulder being screw-threaded with right-hand thread, as shown at a.

C represents the nut formed with Vfemale threads corsponding with the threads a', on which the same is screwed to a point some distance back of the shoulder.

D is a rectangular cap having a hollow center, the circumference of which is greater than that of the nut C, over which the cap is adapted to slide. The vertical outer face of the cap is provided with a central aperture d of a circumference equal to or greater than the circumference of the large threaded end of the boltfso that the same may pass over said end.

Interposed between the outer face of thenut C and the inner face of the vertical portion of the cap is a conical spiral spring E, the smaller coil of which surrounds the threaded portion a', while the remaining coils are arranged so that when compressed they will assume a position one directly over the other.

F is a small nut having a left-handed female thread fitted on the reduced portion B of the bolt. rIhe size of this nut F is greater than the diameter of the bolt, and its rear or inner face is provided with a series of inclined teeth f, inclined in the direction of the movement of the nut when being screwed down, their rear edges being at right angles. These teeth engage with similar inclined teeth G, formed on the outer face of the cap, the inclination of which are, however, in a direction opposite to those on the nut, so that the teeth may pass each other as the outer nut is being screwed down.

In Fig. 2 I have shown a modification of my invention. In this form of construction the parts are identical with those above described, with the exception of the nut F, which is of the ordinary make and is constructed without the teeth. 'lo prevent the same from turning I place it in a cap, and on the outer-face of this cap form the teeth, which engage with the teeth on the inner cap.

It will be seen by the above-described construction that in operation my nut-lock works as follows: When the bolt has been passed through the suitable material designed to be united, the large nut is screwed down tothe proper point of contact. The cap is then placed on the nut, having the spring interposed between the same, the normal tendency of which is to force the cap out. As the small nut is screwed down in the opposite direction or toward the left, the cap is forced back by the hand of the operator and the nut is forced down flush with the shoulder a. While in this position the cap is released and the teeth thereon engage back of the teeth on the outer nut, and owing to the difference in the inclination of the teeth the outer nut is prevented from unscrewing, and owing to the diderent angle of the threads on thebolt the nuts cannot move in the same direction and IOC being united by the 'engaging teeth are prevented from becoming loose.

I ain aware that many minor changes-in the construction and arrangement of the parts of my device can be made and substituted for those herein shown and described without in the least departing from the nature and principle of my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a nut-10ck,the combination, With a boit having a reduced outer end, a right-hand thread formed on said bolt, and a left-hand 5 thread formed on the outer end, of a nut on said FREMONT REYNARD.

Witnesses: 'f

GUsTAV T. ROWENDERWALD, G. A. MUNRoE. 

